Thi*_*obo 2 cocoa-touch nsattributedstring ios
我正在尝试制作带有删除线的属性字符串。我可以设置其他属性,例如前景色和字体大小,但是当我尝试在部分文本中设置删除线时,该部分文本消失了。知道是什么原因造成的吗?
下面是代码。感谢您的关注!
// ...
//Price
NSLog(@"RESULT NUMBER %d", cell.result.resultId);
priceString = (priceString == nil) ? @"$150.00\n$100.00" : priceString;
NSMutableAttributedString *attributedString = [[NSMutableAttributedString alloc] initWithString:priceString];
NSRange linebreak = [priceString rangeOfString:@"\n"];
if (linebreak.location != NSNotFound) {
[attributedString beginEditing];
// RegPrice
NSRange firstLine = NSMakeRange(0, linebreak.location);
// [attributedString addAttribute:NSFontAttributeName
// value:[UIFont boldSystemFontOfSize:11]
// range:firstLine];
[attributedString addAttribute:NSForegroundColorAttributeName
value:[UIColor colorWithRed:0.7 green:0.7 blue:0.7 alpha:1]
range:firstLine];
@try {
[attributedString addAttribute:NSStrikethroughStyleAttributeName
value:@(NSUnderlineStyleSingle)
range:firstLine];
} @catch (NSException *e) {
NSLog(@"ATTRIBUTE EXCEPTION: %@", e);
}
// Sale Price
[attributedString addAttribute:NSFontAttributeName
value:[UIFont boldSystemFontOfSize:14]
range:NSMakeRange(linebreak.location + 1, priceString.length - (linebreak.location + 1))];
[attributedString endEditing];
}
cell.lblPrice.attributedText = attributedString;
return cell;
}
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我遇到了同样的字符串消失问题,直到我意识到 for 的值NSStrikethroughStyleAttributeName应该是 NSNumber。
因此上面的代码应该是这样的:
目标-c
[attributedString addAttribute:NSStrikethroughStyleAttributeName
value: [NSNumber numberWithInt: NSUnderlineStyleSingle]
range:firstLine];
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在 Swift 4 中,使用类型字典传递属性[NSAttributedStringKey: Any],击球槽样式属性如下所示:
[NSAttributedStringKey.strikethroughStyle: NSNumber(value: NSUnderlineStyle.styleSingle.rawValue)]
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